2 m4_chomp(m4_include([VERSION])),
3 [linux-btrfs@vger.kernel.org],,
4 [http://btrfs.wiki.kernel.org])
6 if test "x$PACKAGE_URL" = "x"; then
7 AC_DEFINE([PACKAGE_URL], ["http://btrfs.wiki.kernel.org"], [URL])
15 CFLAGS=${CFLAGS:-"-g -O1 -Wall -D_FORTIFY_SOURCE=2"}
20 AC_CONFIG_AUX_DIR([config])
21 dnl AC_USE_SYSTEM_EXTENSIONS must be called before any macros that run
22 dnl the compiler (like AC_PROG_LIBTOOL) to avoid autoconf errors.
23 AC_USE_SYSTEM_EXTENSIONS
25 AC_CONFIG_SRCDIR([btrfs.c])
26 AC_PREFIX_DEFAULT([/usr/local])
38 AC_CHECK_TOOL([AR], [ar])
39 AC_PATH_PROG([RM], [rm], [rm])
40 AC_PATH_PROG([RMDIR], [rmdir], [rmdir])
43 AC_CHECK_FUNCS([openat], [],
44 [AC_MSG_ERROR([cannot find openat() function])])
46 m4_ifndef([PKG_PROG_PKG_CONFIG],
47 [m4_fatal([Could not locate the pkg-config autoconf
48 macros. These are usually located in /usr/share/aclocal/pkg.m4.
49 If your macros are in a different location, try setting the
50 environment variable AL_OPTS="-I/other/macro/dir" before running
51 ./autogen.sh or autoreconf again.])])
56 dnl Calls pkg-config --static
58 AC_DEFUN([PKG_STATIC], [
59 if AC_RUN_LOG([pkg-config --exists --print-errors "$2"]); then
60 $1=`pkg-config --libs --static "$2"`
63 AC_MSG_ERROR([pkg-config description of $2, needed for static build, is not available])
68 AC_ARG_ENABLE([backtrace],
69 AS_HELP_STRING([--disable-backtrace], [disable btrfs backtrace]),
70 [], [enable_backtrace=yes]
73 AS_IF([test "x$enable_backtrace" = xno], [
74 AC_DEFINE([BTRFS_DISABLE_BACKTRACE], [1], [disable backtrace stuff in kerncompat.h ])
77 if test "x$enable_backtrace" = xyes; then
78 AC_CHECK_HEADERS([execinfo.h])
79 AC_CHECK_FUNCS([backtrace backtrace_symbols_fd], [],
80 AC_MSG_ERROR([standard library does not have backtrace support]))
84 AC_ARG_ENABLE([documentation],
85 AS_HELP_STRING([--disable-documentation], [do not build domumentation]),
86 [], [enable_documentation=yes]
88 AS_IF([test "x$enable_documentation" = xyes], [DISABLE_DOCUMENTATION=0], [DISABLE_DOCUMENTATION=1])
89 AC_SUBST([DISABLE_DOCUMENTATION])
91 dnl detect tools to build documentation
93 if test "x$enable_documentation" = xyes; then
94 AC_PATH_PROG([XMLTO], [xmlto], [xmlto])
95 AC_PATH_PROG([GZIP], [gzip], [gzip])
96 AC_PATH_PROG([MV], [mv], [mv])
98 AC_PATH_PROG([ASCIIDOC], [asciidoc])
99 AC_PATH_PROG([ASCIIDOCTOR], [asciidoctor])
101 dnl asciidoc is preferred
102 if test -n "$ASCIIDOC"; then
103 ASCIIDOC_TOOL="asciidoc"
105 if test -n "$ASCIIDOCTOR"; then
106 ASCIIDOC_TOOL="asciidoctor"
108 AC_MSG_ERROR([cannot find asciidoc or asciidoctor, cannot build documentation])
112 AC_SUBST([ASCIIDOC_TOOL])
114 AC_ARG_ENABLE([convert],
115 AS_HELP_STRING([--disable-convert], [do not build btrfs-convert]),
116 [], [enable_convert=yes]
119 AS_IF([test "x$enable_convert" = xyes], [DISABLE_BTRFSCONVERT=0], [DISABLE_BTRFSCONVERT=1])
120 AC_SUBST([DISABLE_BTRFSCONVERT])
122 AC_ARG_WITH([convert],
123 AS_HELP_STRING([[[]--with-convert[[=auto]]]], [built-in filesystems for convert (default: auto)
124 supported (comma separated list): ext2,reiserfs]),
125 [], [with_convert=auto]
128 if test "$with_convert" = "yes"; then
132 if test "$with_convert" = "no"; then
138 BTRFSCONVERT_REISERFS=0
139 if test "x$enable_convert" = xyes; then
140 if test "x$with_convert" = "xauto" || echo "$with_convert" | grep -q "ext2"; then
141 PKG_CHECK_MODULES(EXT2FS, [ext2fs >= 1.42],,
142 [PKG_CHECK_MODULES(EXT2FS, [ext2fs],
143 [AC_DEFINE([HAVE_OLD_E2FSPROGS], [1],
144 [E2fsprogs does not support BIGALLOC])]
146 PKG_CHECK_MODULES(COM_ERR, [com_err])
147 convertfs="${convertfs:+$convertfs,}ext2"
150 if test "x$with_convert" = "xauto"; then
151 PKG_CHECK_MODULES(REISERFS, [reiserfscore >= 3.6.27],
152 [BTRFSCONVERT_REISERFS=1],
153 [BTRFSCONVERT_REISERFS=0])
154 elif echo "$with_convert" | grep -q "reiserfs"; then
155 PKG_CHECK_MODULES(REISERFS, [reiserfscore >= 3.6.27],
156 [BTRFSCONVERT_REISERFS=1],[])
158 if test "$BTRFSCONVERT_REISERFS" = 1; then
159 convertfs="${convertfs:+$convertfs,}reiserfs"
162 AC_SUBST([BTRFSCONVERT_EXT2])
163 AC_SUBST([BTRFSCONVERT_REISERFS])
166 tmp=$(echo "$with_convert" | sed -e 's/auto//' | sed -e 's/ext2//' | sed -e 's/reiserfs//' | sed -e 's/,\+//')
167 if ! test "x$tmp" = "x"; then
168 AC_MSG_ERROR([unknown tokens for --with-convert: $tmp])
171 if test "$DISABLE_BTRFSCONVERT" = 0 && test "x$convertfs" = "x"; then
172 AC_MSG_ERROR([no filesystems for convert, use --disable-convert instead])
175 HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE=0
176 AX_CHECK_DEFINE([linux/fiemap.h], [FIEMAP_EXTENT_SHARED], [],
177 [HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE=1
178 AC_MSG_WARN([no definition of FIEMAP_EXTENT_SHARED found, probably old kernel, will use own defintion, 'btrfs fi du' might report wrong numbers])])
180 if test "x$HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE" == "x1"; then
181 AC_DEFINE([HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE], [1], [We defined FIEMAP_EXTENT_SHARED])
183 AC_DEFINE([HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE], [0], [We did not define FIEMAP_EXTENT_SHARED])
186 dnl Define <NAME>_LIBS= and <NAME>_CFLAGS= by pkg-config
188 dnl The default PKG_CHECK_MODULES() action-if-not-found is end the
189 dnl execution with error. The static libs are optional.
191 PKG_CHECK_MODULES(BLKID, [blkid])
192 PKG_STATIC(BLKID_LIBS_STATIC, [blkid])
194 PKG_CHECK_MODULES(UUID, [uuid])
195 PKG_STATIC(UUID_LIBS_STATIC, [uuid])
197 PKG_CHECK_MODULES(ZLIB, [zlib])
198 PKG_STATIC(ZLIB_LIBS_STATIC, [zlib])
200 AC_ARG_ENABLE([zstd],
201 AS_HELP_STRING([--disable-zstd], [build without zstd support]),
202 [], [enable_zstd=yes]
205 if test "x$enable_zstd" = xyes; then
206 PKG_CHECK_MODULES(ZSTD, [libzstd >= 1.0.0])
207 PKG_STATIC(ZSTD_LIBS_STATIC, [libzstd])
210 AS_IF([test "x$enable_zstd" = xyes], [BTRFSRESTORE_ZSTD=1], [BTRFSRESTORE_ZSTD=0])
211 AC_SUBST(BTRFSRESTORE_ZSTD)
213 # udev v190 introduced the btrfs builtin and a udev rule to use it.
214 # Our udev rule gives us the friendly dm names but isn't required (or valid)
215 # on earlier releases.
217 if pkg-config udev --atleast-version 190; then
218 UDEVDIR="$(pkg-config udev --variable=udevdir)"
222 dnl lzo library does not provide pkg-config, let use classic way
223 AC_CHECK_LIB([lzo2], [lzo_version], [
226 LZO2_LIBS_STATIC="-llzo2"],[
227 AC_MSG_ERROR([cannot find lzo2 library])
229 AC_SUBST([LZO2_LIBS])
230 AC_SUBST([LZO2_LIBS_STATIC])
231 AC_SUBST([LZO2_CFLAGS])
235 AC_SUBST([LIBBTRFS_MAJOR])
236 AC_SUBST([LIBBTRFS_MINOR])
237 AC_SUBST([LIBBTRFS_PATCHLEVEL])
239 AC_CONFIG_HEADERS([config.h])
243 Documentation/Makefile
250 ${PACKAGE_NAME} ${PACKAGE_VERSION}
253 exec prefix: ${exec_prefix}
257 includedir: ${includedir}
263 documentation: ${enable_documentation}
264 doc generator: ${ASCIIDOC_TOOL}
265 backtrace support: ${enable_backtrace}
266 btrfs-convert: ${enable_convert} ${convertfs:+($convertfs)}
267 btrfs-restore zstd: ${enable_zstd}
269 Type 'make' to compile.